Show allowed domains for bounty URL submissions

Adds a message displaying the list of allowed domains when the bounty has URL submission requirements with domain restrictions. This improves user guidance during the bounty claim process.

Author: marcusljf

apps/web/ui/partners/bounties/claim-bounty-modal.tsx

@@ -582,6 +582,16 @@ function ClaimBountyModalContent({ bounty }: ClaimBountyModalProps) {
                               }
                             />
                           )}
+                          {bounty.submissionRequirements?.url?.domains &&
+                            bounty.submissionRequirements.url.domains.length >
+                              0 && (
+                              <p className="text-xs text-neutral-400">
+                                Allowed domains:{" "}
+                                {bounty.submissionRequirements.url.domains.join(
+                                  ", ",
+                                )}
+                              </p>
+                            )}
                         </div>
                       </div>
                     )}